Add support for inserting blocks inside table cells

[ClementEXWiki]

Is your feature request related to a problem? Please describe.
It currently isn't possible to insert blocks such as lists into table cells.

Describe the solution you'd like
Add support for blocks inside table cells.

Describe alternatives you've considered
N/A

Additional context
I found a few issues mentioning this problem, but they all tackled that in a different way. This issue aims to track progress only for blocks support inside table cells.

Bonus
[ ] I'm a sponsor and would appreciate if you could look into this sooner than later 💖

[YousefED]

Hi! Happy NY.

I think we're tracking this as part of #1540, specifically it's mentioned in this comment; #1540 (comment)